We've been experiencing a 5 minute disconnect on calls coming into an H.323 gateway. The gateway is remote to the CallManager (across a VPN link) connected by Sonicwall firewalls. All else works fine internally (between sites), and outbound calls (through the gateway) are good too. I think this issue might be due to a TCP session termination problem by the Sonicwalls, but searching the firewall GUI has not amounted to much. Does anyone have any ideas or expereinced a similar problem?
Thanks in advance.